● Newly designed with advanced cooling fins the Magicshine MJ-906 weighs just 98g plus the 7.4V 7.8 Ah battery at 336 grams. ● Both the front and rear light heads mount onto your frame with the tried and tested 'o' ring method. Having said that these new rings are newly designed meaning you only need one, whatever the size of your bars - ingenious! ● This new 5000 lumen Magicshine MJ-906 comes with a newly designed 6 x 18650 Li-ion battery (7.4V 7.8Ah) using Velcro straps to attach to your frame, but beautifully molded to make the whole set up less likely to do any damage!● The MJ-906 makes use of the 5 power modes, giving you the choice of 100 percent output, 75 percent, 50 percent, 20 percent and then a flashing mode. Going back to the old scrolling system there is no ability to toggle up and down the modes but for this output at this price, you can't really complain!● The package also contains a little rear light, and a remote button to control both light heads, also included is a splitter cable, charger, and the nylon straps to attach the battery to your bike. All in all, a great new design from Magicshine - I don't think you'll find a cheaper light out there, that offers the reliability of the Magicshine range and the output of this light. ● Run Time 20 percent of lumen output so by my maths 1000 lumens = 10 hours of run time 50 percent of output so 2500 lumens = nearly 5 hours 75 percent so 3750 lumens = just over 3 hours 100 percent so the full 5000 lumens = 2+ hours Flashing mode gives around 7 hours of constant use.● Beam: the beam pattern is 20 degree ●Technical Information- 5 x CREE XM-L2 LED- Luminous flux: 5000 lumens- LED lifespan: 50000 hours- Shell material: aluminum alloy and plastic- Switch: two top click switch and wireless remote control- Working modes: 100 percent, 75 percent, 50 percent, 20 percent, flashing- Charging time 5 hours- Battery lifespan 500 cycles- Waterproof grade IPX 4